The Forrest City times., 1887-12-17
Feeding for Fat and Lean,

shall have occasion henceforth to
 make use of the following terms: ..Car- bohydrates, ""Protein. ". Ash, Fat | There are no simpler words extant
 that can be used to convey the mean ing designed by the aforementioned terms. l will therefore proceed to
 give definition of each word, 50 that
 the reader can understand what is
 meant It wi3 De as well to save these
 definitions for future reference.
 Protein is that part of the food
 which may easily be made over by the
 animal into it's own substance, l. e.,
 into muscles, telidonS and the various
 working tissues and membranes which are necessary parts of the animal ma- chine. because 1t is made up of the
 same kind of mateYials-fs, chemically
 speaking, of the same composition. Carbohydrates" on the other hand, | probably cannot serve at all for build | ing up the muscles and other parts of i the growing animal. and cannot re-
 store the waste and wear of these parts
 of mature animals, because they are of
 a very different nature. They contain mo nitrogen, an element which enters | into all the animal tissues (albumin- oidsl to the extent of some sixteen per cent. of their dry matter. Carbohy-
 drate cannot restore the worn out mus cles or membranes of the animal any more than coal can be made to renew
 the used-up packing, bolts, valves,
 fiues and gearing of a steam engine. | Protein is to the OK and man what
 brass and iron are to the machine-the
 materials of construction and repair. l Carbohydrates and fat are furthermore | to the animal very much what coal and | fuel are to the steam engine. Their consumption generates the power which runs the mechanism. Their burning | toxidation) in the blood of animals produces the results of life, just as the combustion of coal in the fireplace of a steam engine produces the motion and power of that machine. There is, how ever, this difference between She e1l- zine and the animal. The former may be stopped for repairs; the latter may
 nun at lower rate, but if it be stopped it cannot resume work. Hence the repairs of the animal must go on simul- taneously with it's wastes; therefore the materials of which 1t Fs built must admit of constant replacement, and the dust and shreds of it's wear and tear must admit of escape without InpeulDg dcblon. l ut dtltifissf HuIN lS dS if an engine were fed not only with coal and water. but with iron and brass and all the materials for it's re-
 pair. and also as if the engine con
 surned it's own worn out parts, vcfding them as ashes, or as gas and smoke. Protein, or the blood and tissue former, is thus consumed in the animal, as we'll as the fat and carbohydrates, or fuel proper The fact that protein ad- mits of consumption implies that when the proper fuel is insufficient protein may itself serve as fuel. Such is the case in fact. But, nevertheless, tire two classes of substances have highly distinct uses.
 Ash is the residue remaining when a plant has been burned. It contains the mineral matters extracted by the growing plant from the soil. It is used by the animal in the formation of bone.
 Eat" includes the oil and wax in the food stnff. Its use and elfect is similar to the carbohydrates.